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8 February 2022

⚡️ 94: How we fail the web development baseline

͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏ ͏
 
Performance Newsletter
[issue ]()94
 
#### Editor’s note
 

Lack of investment in web performance translates to higher carbon emissions in a time when we desperately need to lower them.

 

It’s never been easier (and in some cases, more affordable) to create, host and serve sites and applications across the world to tens of thousands of visitors. Financials and implementation complexity are only two factors of the actual cost. The ease of publishing obscures the critical cost under *it just works* hosting magic.

 

The less performant our site is, the more unnecessary emissions it creates. The impact is multiplied by the size of its audience. Web performance isn’t an aspirational feature. It’s a necessity.

 
Karolina
 
 
 
 
#### What’s Performance newsletter?
 

Performance Newsletter is a fortnightly mailing by [Calibre](https://calibreapp.com), featuring web performance tools, talks and resources.

Don’t worry—we don’t spam. If you’d like to leave, [unsubscribe]() at any time. Suggest content [here](mailto:[email protected]).

 
 
 
# Articles  
 
The baseline for web development in 2022
 
### [The baseline for web development in 2022](https://engineering.linecorp.com/en/blog/the-baseline-for-web-development-in-2022/)
 
[Alan Dávalos](https://twitter.com/AlanGDavalos)
What should be our development baseline for browser support, devices and networks? It turns out the web is far from addressing its users needs. Here’s where we are and what we can do to be better.
 
### [Ain’t No Party Like a Third Party](https://css-tricks.com/aint-no-party-like-a-third-party/)
 
[Jeremy Keith](https://twitter.com/adactio)
Third party scripts not only have an impact on performance but can be a privacy and a security threat. Here’s why you should rethink adding them.
 
Caching Header Best Practices
 
### [Caching Header Best Practices](https://simonhearne.com/2022/caching-header-best-practices/)
 
[Simon Hearne](https://twitter.com/SimonHearne)
Caching headers are surprisingly complex and often misconfigured. Learn what cache headers are available and when to use them on the client-side.
 
Reducing The Web’s Carbon Footprint: Optimizing Social Media Embeds
 
### [Reducing The Web’s Carbon Footprint: Optimizing Social Media Embeds](https://www.smashingmagazine.com/2022/02/reducing-web-carbon-footprint-optimizing-social-media-embeds/)
 
[Michelle Barker](https://twitter.com/MicheBarks)

Embedded YouTube video loads around 600kB of JS for any visitor regardless of whether that user even chose to watch it*. *Find out how social media embeds affect page speed and learn how to mitigate their impact.

 
 
 
# Case Studies  
 
Fixing Performance Regressions Before they Happen
 
### [Fixing Performance Regressions Before they Happen](https://netflixtechblog.com/fixing-performance-regressions-before-they-happen-eab2602b86fe)
 
[Angus Croll](https://twitter.com/angustweets)
Ensuring that performance data is reliable and free of anomalies isn’t easy. Learn how Netflix measures speed before releases and approaches result validation.
 
 
 
# Talks & Podcasts  
 
Carbon footprint of images on the web
 
### [Carbon footprint of images on the web](https://speakerdeck.com/jonarnes/carbon-footprint-of-images-on-the-web)
 
[Jon Arne Sæterås](https://twitter.com/jonarnes)
A short but sweet summary about quantifying the carbon footprint of imagery and how to reduce it.
 
 
Calibre
 
This email is brought to you by the team at [Calibre](https://calibreapp.com). We automate web performance testing, reporting and alerting, so you don’t have to.
 
 

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